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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
TP09_BB
CN605
TP09_BB
CN106
TP09_BB
CN108
Main Board
FLCD
Multikey
TP09_BB
CN902
①
①
①
①
REV.F
(TOUCH_BUTTON_INT)
VDDE_1V8
VDD_LDO_3V1
52
53
54
55
56
57
58
38
43
44
45
46
47
48
49
50
51
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
APP_GP_LCD_ID
TOUCH_SCREEN_SDA
TOUCH_SCREEN_INT
TOUCH BUTTON SCL
LCD_DATA[1]
LCD_DATA[2]
LCD_DATA[4]
LCD_DATA[6]
LCD_DATA[3]
LCD_DATA[5]
LCD_DATA[7]
TOUCH_SCREEN_SCL
T
O
UCH_3.1V
VDDE_1V8
55
56
57
58
43
44
45
46
47
48
49
50
51
52
53
54
26
27
28
29
30
31
32
33
34
35
36
37
38
23
24
25
APP_GP12_LCD_ID
TOUCH_SCREEN_INT
TOUCH_SCREEN_SDA
TOUCH_SCREEN_SCL
LCD_DATA[7]
LCD_DATA[5]
LCD_DATA[3]
LCD_DATA[6]
LCD_DATA[4]
LCD_DATA[2]
LCD_DATA[1]
LCD_DATA[0]
38
39
4
40
41
42
43
44
5
6
7
3
CN108
1
2
TOUCH_3.1V
TOUCH_SCREEN_SCL
TOUCH_BUTTON_SDA
TOUCH_SCREEN_INT
TOUCH_SCREEN_SDA
TOUCH_3.1V
7
38
39
4
40
41
42
43
44
5
6
2
3
CN902
1
TOUCH_BUTTON_SDA
TOUCH_SCREEN_INT
TOUCH_SCREEN_SDA
TOUCH_SCREEN_SCL